Paper making apparatus



Nov. '13, 1934. Q M ARYAN 1,980Q253 PAPER MAKING APPARATUS Filed April3, 1935 v INVENTOR. Cazszw/ffir Ma /C21,,

ATTORNEY.

Patented Nov. 13, 1934 UNITED STATES PATENT OFFICE 1,980,253 PAPERMAKING APPARATUS Cassius M. Bryan, West Springfield, Mass. ApplicationApril 3, 1933; Serial nofssazzs 1 Claim. (01. 92-24) i This inventionrelates to improvements in paper-making apparatus and is directed moreparticularly to improvements in beaters and the like and methods ofoperating beaters.

-591 The principalobjects of the invention are directed to the provisionof improvements in a beater or similar apparatus to facilitate the easyand efficient setting of the roll and operating thereof.

:1. As'is well-known, a beater or similar apparatus comprises a rollwhich is rotatable above a bed plate or plates and co-operates therewithso that paper-making stock such as fibers in water may be passed betweenthe roll and plate. In opera- 15.2tion more or less pressure is exertedby the roll to bring about certain chemical and/or physical changes inthe fibers of the stock being acted sary that the roll be operated forsuccessive difierent periods of time and/or at different rollclearerations.

It is recognized as being difficult, if not impossible,' to determinethe roll pressure at different settings of the roll and in fact it isprobably unknown what the roll pressure is. In the ordinary machine ofthe type referred to, lighter bars support opposite ends of the rollshaft and are adjustable at one end for varying the distance between theperiphery ofv the roll and said bed plate in order to obtain differentroll pressures or operating conditions and results.

I This distance between the ,roll and bed plate maybe varied accordingto the consistency or nature of the stock in order to vary the pressureand thereby vary the results obtained. It is not only difiicult howeverto manipulate the adjust-- ments to bring about the desired results butit is likewise difficult to duplicate results or to actuallyknow what istaking place.

It is the universal practise for a skilled beater operator to be guidedalmost entirely by certain senses, such as the feel of the stockfromtime to time and the sound of what he believes to be tak- .ing"place. It is usual for the operator to place his "footon the bed platewhich projects outside the ances and or pressures throughout a cycle ofop-- machine so he may sense the'vibrations and altogether he is guidedby the senses in making the necessary adjustments with the hopes ofobtaining the results desired. There is no definiteness as to what isactually taking place or any definite way of knowing theactual'operating conditions.

Attempts have been made to adjust the roll relative to the bed plate bymeans of various" mechanisms and various instruments have been used toindicate the movements of the roll sup- 1 porting bars. Such mechanismshowever, have not been'used with great success because of loss of motionof the parts and the fact that the roll is moved but a few thousandthsof an inch to produce great differences in results and any wear or 7inaccuracies in the parts are not compensated for.

According to my invention, means is provided for moving the roll towardsand away from the bed plate whereby it is possible to fix the roll invarious adjusted positions relative to the bed plate.

With the roll thus adjustably fixed in some position and withpaper-making material being acted upon by the roll, the novel mechanism,of the invention includes indicating means to in dicate a certainpressure condition which exists between the roll and bed plate at thatparticular position of the roll. Certain indications indicate certainrelated conditions of pressure. When certain results are obtained undercertain conditions as evidenced by a certain indication, it is, ofcourse, possible to create that same con'- dition at a subsequent time;In other words, by moving or adjusting the roll, the indicator may bebrought to a. certain point to thereby indicate \a certain relatedpressure condition between the roll and bed plate which it is desired tobring about in order to obtain a certain function and result. I

Over a cycle of operations it is possible to adjust the roll in such amanner that certain conditions of pressure prevail over pre-determinedlengths of time which conditions are indicatedby the indicator. In thatway, it is possible to operate the machine and substantially duplicate aseries of conditions and provide uniform results so as tofacilitate'substantial accuracy in manufacture and uniformity of productin all its important respects.

Various and numerous novel objects and advantages of the invention willbe hereinafter more fully referred to in connection with theaccompanying description wherein the invention in the form at presentpreferred is disclosed, reference 110 being had to the accompanyingdrawing, where- Fig. 1 is a side elevational view of a beater apparatushaving the novel features of the invention associated therewith, and

Fig. 2 is a sectional view through a roll and bed plate of the beatershown in Fig. 1.

Referring now to the drawing in detail the invention will be fullydescribed.

In Fig. lthere is shown a beater B in amore or less diagrammatic waywhich includes a vat 2 of the usual form. A bed plate is shown at 4,above which is a roll 6. The bed plate 4 and roll 6 may be of the usualform and carry a plurality of co-acting bars such as 5 and 7.

The roll is driven in the usual manner. and its shaft 8 is journalled inlighter-bars such as '10 disposed at opposite sides of. the beaten.

Lighter posts 12 and 13 such as shown, are

arranged in pairs at the rear and forward sides of the vat. Ordinarilythe bars Ill-are pivoted;

at. one of their ends' to the posts, such as the posts at the left.Their others ends are adjustable up and down so that the roll may bemoved relative to the bed plate 1 According to this invention, thelighter bars 10 .aie'not pivoted in the posts 12in the ordinary manner;Their other ends, or righthand ends. are movable inthe posts 13 and arein threaded gqmen'gagment with screws 14. The screw mem-f :be'rs 14 arerotatable by means of toothed mernbers 14 and 16 associated therewithand with an operatingcross shaft 20 carrying a hand wheel In theordinaryconstruction with the lighter 'barslllpivoted to posts 12.,th'e lighterbarsare raised and lowered by rotation of the shaft 20.'

This may be done by turning the hand wheel 22 so as to move the roll '6towards and away 9; from the bed plate whereby the said rollnwill actwith different pressures on"'material pass-'- ing between the roll andbed plate.

According [to this invention inorder to facilitate the setting of theroll 6 relative to the bed -plat and create adesired condition, Iprovide a mechanism which may be'said to indicateva- .riou's conditionsor roll'pressures. This is accomplished infa broad wayby what may becalled weighing the roll. The weight of the roll. on the lighter barsvaries as it is supported or resisted by the paper-making stock passingbe-, tweenthe roll and bed plate and these various Weights areindicated'so that the operator may adjust the'roll according to theindicationsand bring about various desired operating conditions. Toexplain the invention, 1 have shown .in Fig. 1 certain mechanism ata somewhatenlarged scale which is adapted. to operateto bring about the"desired results.

A lever 30 is pivoted on a rod 32 which may extend from a ceiling Cwhile another lever 32 isas'sociated with a rod 34 extending from thefloor F, A rod 36 connects'one end of the'lever 30 to thefree end of thelighter bar 10- whilea rod 555 38 connects the other end of the lever 30and. the lever 32. An indicating device which maybe in the form of ascale S is suspended from: the ceiling in any suitable way as by meansof a rod 39. This scale has the usual weight-supporting or W5weight-sensitive element such as a rod 40 which is ordinarily movable tosome, extent relative to the scale and is'con'nected to, theother endof. the lever .32. I

The scale S may be of any well-known form a pointer 42.which.,rota;tesrelative to a dial 44. The dial 44 of the scale may be graduated withany indicia desired. It will be appreciated that various weights appliedto the part 40 of the scale will move the pointer 42 thereof intoregister with various graduations or indicia of the dial 44.

The beater roll 6, in order to function for the purposes intended,usually weighs several thousand pounds. The levers and links describedconstitute in the preferred embodimentof the invention connectionsbetween the indicator unit or scale and the lighter bar so that one endof the bar and a portionof the roll is actually supported and weighedby, the scale. When the roll is away from the bed plate with no stocktherebetween, thescale willbe attested so that its pointer 42 willregister with a certain graduation on the dial.

Forinstance'with the roll out of contact with the bed plate and with nomaterial between the roll and plate, the roll is supported by the scaleso that the pointer may register with such 291113411- meral as 100011the iflland thus .indicate'one: hundred pounds which may be the fullapacity. of the scale. Such an indication willmeanthat: the roll is nothearing on either material r'or-jpa- 1:0 per making stock. Onmovingthehand wheel. 22 so as to move the, bapldmpand-downtime; pointer.will remain in registerwithythe imdinia; of the dial of the scale solong as the-roll, does n t n c wi t e. aidhedm a eor wtt stock betweenit and said-plate. I

With t m c mopere n. h wever. and; with the roll set at some operatingdistancefrcm h bed p e n hi e m e al 'be ns passed;

t n the l, and pla he l. is I twain supp rt to ame ex ent r ts iw sht rsist d. y th a e ia -i s elhu sup orted.- or resisted, its weight islesstlaan- 10 0 so that, ,tl ae; pointer i tn o some ther er l tw n IOUand ed-p a e @WQS'III theindicated weiahtof theroll lig lilter;v

a d c e t e oint omov the i i te i h' a TU B S H -n. t e era e ik s thas am p i sl o i n xi s md;t at c teinn- 1Io ew w p ss e as :b e ebt n ior s h t e. w mflrm or n s ste wi h: e ven. d s snetic n .dialwit ay.lately, be sssl pied that .the roll is operating at some rather definitepressure related to the By rotating the hand wheel and, there/bathe;Shaft th crew :4 bem a s d n this way, the righthand ends of the barsmaybe; raised.- orloweredso that the roll is raised orlow eredJ As willbe see n -a change positionrm of the roll about achange-of or. pressureand a, corresponding 912-5 sition of the pointer 01, the scale.

Having deter-mined through a cycle, of operations what certainsuccessive operating engages-.

sure conditions are. desirable andwhichame in dicated'hycertainrelatedpositions of the it is possible to duplicatethoseconditions by ad,-, justing the roll so that-the pointer ispositioned.

at thoseindications which are-related we 1 since a so-called effectiveweight of the roll is indicated on the scale and the pressure at whichthe roll is then operating has a relation to the indicated weight, it ispossible by manipulating the roll up and down to arrive at thatindicated weight to produce the desired pressure or operating conditionrelated to the indicated weight. This all facilitates economy andefficiency in operation and at the same time makes it possible toprovide pre-determined conditions and resultant definite operatingefiects.

Supplemental to the indicating means in the form of the scale shown itmay be desirable to employ a recording apparatus which may be acted uponby the lever mechanism and thereby graphically illustrate the operatingconditions and changes therein relative to a time unit or units over acycle of operation.

Various changes and modifications may be made in the form of theapparatus without departing from the spirit and scope of the inventiontherefor what it is desired to claim and secure by Letters Patent of theUnited States is:

A beater apparatus for paper pulp and like material comprising incombination, a rigid support,

a vat rigidly supported by said support, a bed plate associated with theinside of said vat, a pair of vertically extending supporting postmembers having their lower ends rigidly associated with said support inspaced relation, a lighter bar extending between said post members, anda horizontally disposed beater roll co-operating with said bed platerotatably supported within said vat by said lighter bar at a pointintermediate the opposite ends of the bar, one of said post members andone end of the lighter bar having means associated therewith wherebysaid lighter bar may be moved vertically into various positions ofadjustment to adjust the said roll relative to the bed plate, the otherend of the lighter bar being arranged relative to the other post memberfor unrestrained vertical movements, and weighing mechanism responsiveto up and down movements entirely supporting said other end of thelighter bar and including indicating means to indicate the variance inthe weight of said lighter bar and roll accordingly as said one end ofthe bar is moved vertically to adjust said roll.

CASSIUS M. BRYAN.

